.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 12px 24px;
  border-radius: var(--radius-full);
  font-family: var(--font);
  font-size: 15px;
  font-weight: 600;
  transition: all var(--transition);
  cursor: pointer;
  border: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-text-on-primary);
  box-shadow: var(--shadow-primary);
}

.btn-primary:hover  { background: var(--color-primary-light); transform: translateY(-1px); }
.btn-primary:active { transform: scale(0.97); }

.btn-secondary {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn-secondary:hover  { background: var(--color-primary-tint); }
.btn-secondary:active { transform: scale(0.97); }

.btn-sm {
  padding: 8px 18px;
  font-size: 13px;
}

.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.card {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-light);
  overflow: hidden;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 500;
  background: var(--color-badge-bg);
  color: var(--color-badge-text);
}

.badge-primary {
  background: var(--color-primary-ultra-light);
  color: var(--color-primary);
}

.divider {
  height: 1px;
  background: var(--color-border);
  border: none;
}

.section-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-text);
}

.section-sub {
  font-size: 13px;
  color: var(--color-text-secondary);
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  padding: var(--spacing-xl) var(--spacing-lg);
  text-align: center;
}

.empty-state i {
  font-size: 48px;
  color: var(--color-border);
}

.empty-state p {
  color: var(--color-text-secondary);
  font-size: 14px;
}

.skeleton {
  background: linear-gradient(90deg, var(--color-border-light) 25%, var(--color-bg) 50%, var(--color-border-light) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
}

@keyframes shimmer {
  0%   { background-position: -200% 0; }
  100% { background-position:  200% 0; }
}

.trip-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
  cursor: pointer;
}

.trip-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.trip-card:active {
  transform: scale(0.98);
}

.trip-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.trip-card-agency {
  display: flex;
  align-items: center;
  gap: 8px;
}

.trip-card-agency-logo {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  object-fit: cover;
  border: 1.5px solid var(--color-border);
  background: var(--color-bg);
}

.trip-card-agency-logo-placeholder {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background: var(--color-primary-ultra-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-primary);
  flex-shrink: 0;
}

.trip-card-agency-name {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-secondary);
}

.trip-card-price {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-primary);
}

.trip-card-price span {
  font-size: 11px;
  font-weight: 500;
  color: var(--color-text-muted);
}

.trip-card-route {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: 14px;
}

.trip-card-city {
  flex: 1;
}

.trip-card-city-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
}

.trip-card-city-time {
  font-size: 12px;
  color: var(--color-text-secondary);
  margin-top: 2px;
}

.trip-card-arrow {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  flex-shrink: 0;
  color: var(--color-text-muted);
}

.trip-card-arrow-line {
  width: 56px;
  height: 1px;
  background: linear-gradient(90deg, var(--color-border), var(--color-primary), var(--color-border));
}

.trip-card-arrow i {
  font-size: 14px;
  color: var(--color-primary);
  margin-top: -4px;
}

.trip-card-duration {
  font-size: 10px;
  font-weight: 500;
  color: var(--color-text-muted);
}

.trip-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.trip-card-seats {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  color: var(--color-text-secondary);
}

.trip-card-seats i { font-size: 14px; }

.trip-card-seats.low { color: var(--color-warning); }
.trip-card-seats.full { color: var(--color-danger); }